One really nice method of measuring mentioned in the 2001 rules was to make knots at 1 hinch intervals on a piece of string. That way you can measure around objects and stuff.
Now that I think about it, it would be nice to tie one of these
to each end of the string so that you could fasten it to the battlefield and keep it taut.

Its not important to win for me as long as my minifgs die in a honorably way in battle
And in a game both players normally use the same mesauring unit be it centimeter, inches or studs... and its a good way to guess your movement rating, if you always loose your measurement tape like me

This is stupid! This is sick! You can't do this in the real world!
So What?
Nothing its just so cool